Bi-concave lenses

Bi-concave lenses with both curved sides have negative focal length, and are used for image reduction and to spread light.

Material: BK7 , Silica andothers

Focal length tolerance:±2% ~ ±0.5%

Diameter tolerance:±0.2mm ~ ±0.05mm

Center Thickness:±0.2mm ~ ±0.03mm

Surface quality:60/40 ~ 10/5

Surface accuracy:λ/4@633nm

Centration: 3'~1'

Bevelling:< 0.25mm x 45°

We will also do according to the specifications such as size, structure, material, surface treatment and so on that the customers required. We supply them with good quality and low price. Please contact us to know details. Besides, there are a large volume of optical components in various shapes and sizes in stock to facilitate quick deliveries.